135518-32-0 8-(Methylthio)isothiazolo(4',5':4,5)thieno(3,2-d)-1,2,3-triazin-4(1H)-one BRN 4260073 Isothiazolo(4',5':4,5)thieno(3,2-d)-1,2,3-triazin-4(1H)-one, 8-(methylthio)-